Roasted Cod with Onions and Potatoes

In the old days, fresh fish was a rare sight in Greek mountain villages. For centuries, villagers would walk hours, if not days, to the closest seaside town. Later, with the advent of the automobile, fishmongers and fishermen would drive through the hilltop towns at best once a week to flog the latest catch of the day. So in reality, dried cod was the only option for the omega 3-starved mountain Greeks. Baked right, bakaliaros is delightfully chewy, with the soft potatoes and sweet o